CALIFORNIA AIR RESOURCES BOARD

APCD/AQMD RULE EVALUATION FORM – Page 1

(Electronic Format)

I. GENERAL INFORMATION

District: SCAQMD

Rule No(s): 1111 Date adopted/Amended/Rescinded: 09/05/2014

Rule Title(s): Rule 1111 -- Reduction of NOx Emissions from Natural Gas-Fired, Fan-Type Central Furnaces

Date Submitted to ARB: November 13, 2014

If an Amended Rule, Date Last Amended (or Adopted): November 6, 2009

Is the Rule Intended to be Sent to the U.S. EPA as a SIP Revision? Yes No (If No, do not complete remainder of form)

District Contact: Joe Cassmassi Phone Number: 909-396-3155 E-mail Address: JCassmassi@aqmd.gov

Narrative Summary of New Rule or Rule Changes: New Rule Amended Rule

This rule reduces nitrogen oxide emissions from natural gas-fired, fan-type central heating furnaces used in 

residences and small commercial buildings. This rule amendment delays a compliance date by 6 months and 

povides manufacturers with an alternate compliance option. The rule implements Control Measure CMB-03 –

Further NOx Reductions from Residential Heating Furnaces of the SCAQMD 2007 AQMP.

Pollutant(s) Regulated by the Rule (Check): ROG (NOx) SO2

(CO) PM TAC (name):

II. EFFECT ON EMISSIONS

Complete this section ONLY for rules that, when implemented, will result in quantifiable changes in emissions. Attach reference(s) for emission factor(s) 

and other information. Attach calculation sheet showing how the emission information provided below was determined.

Net Effect on Emissions: Increase* Decrease** N/A

Emission Reduction Commitment in SIP for this Source Category: Rule 1111 was amended in 2009 and is based on

Control Measure CMB-03 – Further NOx Reductions from Residential Heating Furnaces of the 2007 AQMP. CMB03 projected an annual average NOx emission reduction of 0.8 tons/day in 2014 and 3.3 tons/day in 2023 from 

projected inventories for this category of 10.5 tons/day in 2014 and 11.1 tons/day in 2023. The 2009 rule 

amendment projected a NOx emission reduction of 0.09 tons/day in 2014 and a 3.0 ton/day reduction by 2023.

Inventory Year Used to Calculate Changes in Emissions: 2014 Area Affected: SCAQMD

Future Year Control Profile Estimate (Provide information on as many years as possible):

(Annual Average – 2014 Baseline – 2007 AQMP)

Tons/Year Baseline 

Reductions Tons/Year Annual Cumulative Cumulative Control

Year (Increases) Subject to Rule Control Control Factor __

2012 0.005 / 10.5 = 0.0 0.0 1.00 -- 0.0 = 1.0

2014 0.014 / 10.5 = 0.001 0.00 1.00 -- 0.01 = 1.0

2015 0.11 / 10.5 = 0.009 0.01 1.00 -- 0.01 = 0.99

2016 0.38 / 10.5 = 0.026 0.04 1.00 -- 0.04 = 0.96

2018 0.98 / 10.5 = 0.057 0.09 1.00 -- 0.09 = 0.91

2023 2.50 / 11.1 * = 0.137 0.23 1.00 -- 0.23 = 0.77

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*2023 Projected Baseline in 2007 AQMP
CALIFORNIA AIR RESOURCES BOARD

APCD/AQMD RULE EVALUATION FORM - Page 2

(Electronic Format)

Baseline Inventory in the SIP for the Control Measure: 10.5 tons/day in 2014 and 11.1 tons/day in 2023

Emissions Reduction Commitment in the SIP for the Control Measure: Control Measure CMB-03 – Further NOx 

Reductions from Residential Heating Furnaces of the 2007 AQMP projected an annual average NOx emission reduction 

of 0.8 tons/day in 2014 and 3.3 tons/day in 2023 from projected inventories for this category of 10.5 tons/day in 2014 and 

11.1 tons/day in 2023.

Revised Baseline Inventory (if any): 

Revised Emission Reduction Estimate (if developed): 0 ton/day in 2014 and 2.5 tons/day in 2023

Note that the district’s input to the Rule Evaluation Form will not be used as input to the ARB’s emission forecasting and 

planning.

III. SOURCES/ATTAINMENT STATUS

District is: Attainment Nonattainment Split

Approximate Total Number of Small (<100 TPY) Sources Affected by this Amendment: Area Source

Percent in Nonattainment Area: 100%

Number of Large (> 100 TPY) Sources Controlled: 0 Percent in Nonattainment Area: 0%

Name(s) and Location(s) (city and county) of Large (> 100 TPY) Sources Controlled by Rule (Attach additional sheets as 

necessary): N/A

IV. EMISSION REDUCTION TECHNOLOGY

Does the Rule Include Emission Limits that are Continuous? Yes No

If Yes, Those Limits are in Section(s) (c) of the Rule.

Other Methods in the Rule for Achieving Emission Reductions are: N/A

V. OTHER REQUIREMENTS

The Rule Contains:

Emission Limits in Section(s): (c) Work Practice Standards in Section(s): (c),(d),(e)

Recordkeeping Requirements in Section(s): (d),(e),(h) Reporting Requirements in Section(s): (d),(h)
CALIFORNIA AIR RESOURCES BOARD

APCD/AQMD RULE EVALUATION FORM - Page 3

(Electronic Format)

VI. IMPACT ON AIR QUALITY PLAN

 No Impact Impacts RFP Impacts attainment

Discussion: The Rule 1111 amdendment will delay NOx emission reductions but achieve the same emission reductions 

when all residential furnaces are replaced with units that meet the new NOx limit. 

5/1/2002